Try going into your "User CP" (User control panel) and choose "Edit Options." At the very bottom of that screen it allows you to select different styles, choose the one you want and click save. If you already tried that, try selecting the style according to the instructions in the Announcement (at the top of every forum).

As for screen size, we haven't touched that. You can resize your Web browser screen to any size you'd like and the forums will be happy at that new size. Does that make sense?

J